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Castle Biosciences CSTL Common Stock Shares Outstanding

Common Stock Shares Outstanding at other companies

BillionToOne, Inc. logo
BillionToOne, Inc. BLLN
$614.21M—

Other financials

Income statement

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Revenue$83.7M-4.9%
Gross profit$63.1M-11.8%
Operating income-$18.4M+34.1%
Net income-$14.5M+43.8%
EPS (diluted)-$0.49+45.6%

Balance sheet

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Cash & equivalents$63.8M-28.9%
Total debt$36.7M+42.1%
Total equity$461.4M+4.8%
Total assets$547.8M+9.2%

Cash flow

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Operating cash flow-$22.1M-267%
CapEx$12.5M+163%
Free cash flow-$34.6M-221%

Valuation

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Market cap$694.86M+29.9%
Enterprise value$667.82M+41.8%
P/S2×+0.5×

Profitability

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Gross margin77.9%-4.1pp
Operating margin-9.8%-30.8pp
Net margin-3.8%-10.2pp
FCF margin1.3%-10.7pp

Returns & leverage

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Return on equity-2.8%-10.6pp
Debt / equity0.1×0.0×
Current ratio6.7×-2.6×

Where this comes from

Reported directly by Castle Biosciences in its filing.

Tagged under the XBRL concept us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue.

The official record: Castle Biosciences’s 10-Q, filed May 6, 2026, on SEC EDGAR. View the filing →

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Questions, answered.

What is Castle Biosciences's common stock shares outstanding?
Castle Biosciences (CSTL) reported common stock shares outstanding of $9.26M in Q1 2026.
How has Castle Biosciences's common stock shares outstanding changed year-over-year?
Castle Biosciences's common stock shares outstanding increased by 22.5% year-over-year, from $7.56M to $9.26M.
What does common stock shares outstanding mean?
This represents the total number of common shares held by all shareholders, including institutional investors and insiders. It serves as the denominator for calculating earnings per share and is a key indicator of potential equity dilution. Changes in this figure reflect share repurchases, new issuances, or conversion of convertible securities.